Here are some vinyl figures that feature Darth Vader and Stormtroopers turned into ducks.

These were designed by Twinbot Studio out of Korea, who are known for their vinyl figures that are titled "Quack." They are described as optimistic duck character without wings who express various themes. These were created for a Star Wars exhibit that took place in Korea. I am not sure if they were ever available outside of Korea. The only websites that I saw selling any of the Twinbot vinyl figures were Korean, so if anyone has any additional information to pass on that would be greatly appreciated. In the meantime, check out the images below.